Transport engineering for improving the production and secretion of valuable alkaloids in Escherichia coli

Microorganisms can be metabolically engineered to produce specialized plant metabolites. However, these methods are limited by low productivity and intracellular accumulation of metabolites. We sought to use transport engineering for producing reticuline, an important intermediate in the alkaloid bi...

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Main Authors: Yasuyuki Yamada, Miya Urui, Hidehiro Oki, Kai Inoue, Haruyuki Matsui, Yoshito Ikeda, Akira Nakagawa, Fumihiko Sato, Hiromichi Minami, Nobukazu Shitan
Format: Article
Language:English
Published: Elsevier 2021-12-01
Series:Metabolic Engineering Communications
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2214030121000249
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author Yasuyuki Yamada
Miya Urui
Hidehiro Oki
Kai Inoue
Haruyuki Matsui
Yoshito Ikeda
Akira Nakagawa
Fumihiko Sato
Hiromichi Minami
Nobukazu Shitan
author_facet Yasuyuki Yamada
Miya Urui
Hidehiro Oki
Kai Inoue
Haruyuki Matsui
Yoshito Ikeda
Akira Nakagawa
Fumihiko Sato
Hiromichi Minami
Nobukazu Shitan
author_sort Yasuyuki Yamada
collection DOAJ
description Microorganisms can be metabolically engineered to produce specialized plant metabolites. However, these methods are limited by low productivity and intracellular accumulation of metabolites. We sought to use transport engineering for producing reticuline, an important intermediate in the alkaloid biosynthetic pathway. In this study, we established a reticuline-producing Escherichia coli strain into which the multidrug and toxic compound extrusion transporter Arabidopsis AtDTX1 was introduced. AtDTX1 was selected due to its suitable expression in E. coli and its reticuline-transport activity. Expression of AtDTX1 enhanced reticuline production by 11-fold, and the produced reticuline was secreted into the medium. AtDTX1 expression also conferred high plasmid stability and resulted in upregulation or downregulation of several genes associated with biological processes, including metabolic pathways for reticuline biosynthesis, leading to the production and secretion of high levels of reticuline. The successful employment of a transporter for alkaloid production suggests that the proposed transport engineering approach may improve the biosynthesis of specialized metabolites via metabolic engineering.
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spelling doaj.art-6aebad267daf4f2783262f7cdf063c8a2022-12-21T18:12:00ZengElsevierMetabolic Engineering Communications2214-03012021-12-0113e00184Transport engineering for improving the production and secretion of valuable alkaloids in Escherichia coliYasuyuki Yamada0Miya Urui1Hidehiro Oki2Kai Inoue3Haruyuki Matsui4Yoshito Ikeda5Akira Nakagawa6Fumihiko Sato7Hiromichi Minami8Nobukazu Shitan9Laboratory of Medicinal Cell Biology, Kobe Pharmaceutical University, Motoyamakita-machi, Higashinada-ku, Kobe, 658-8558, JapanLaboratory of Medicinal Cell Biology, Kobe Pharmaceutical University, Motoyamakita-machi, Higashinada-ku, Kobe, 658-8558, JapanLaboratory of Medicinal Cell Biology, Kobe Pharmaceutical University, Motoyamakita-machi, Higashinada-ku, Kobe, 658-8558, JapanLaboratory of Medicinal Cell Biology, Kobe Pharmaceutical University, Motoyamakita-machi, Higashinada-ku, Kobe, 658-8558, JapanLaboratory of Medicinal Cell Biology, Kobe Pharmaceutical University, Motoyamakita-machi, Higashinada-ku, Kobe, 658-8558, JapanLaboratory of Medicinal Cell Biology, Kobe Pharmaceutical University, Motoyamakita-machi, Higashinada-ku, Kobe, 658-8558, JapanResearch Institute for Bioresources and Biotechnology, Ishikawa Prefectural University, Nonoichi-machi, Ishikawa, 921-8836, JapanDepartment of Plant Gene and Totipotency, Division of Integrated Life Science, Graduate School of Biostudies, Kyoto University, Kyoto, 606-8502, Japan; Graduate School of Science, Osaka Prefecture University, Sakai, 599-8531, JapanResearch Institute for Bioresources and Biotechnology, Ishikawa Prefectural University, Nonoichi-machi, Ishikawa, 921-8836, JapanLaboratory of Medicinal Cell Biology, Kobe Pharmaceutical University, Motoyamakita-machi, Higashinada-ku, Kobe, 658-8558, Japan; Corresponding author.Microorganisms can be metabolically engineered to produce specialized plant metabolites. However, these methods are limited by low productivity and intracellular accumulation of metabolites. We sought to use transport engineering for producing reticuline, an important intermediate in the alkaloid biosynthetic pathway. In this study, we established a reticuline-producing Escherichia coli strain into which the multidrug and toxic compound extrusion transporter Arabidopsis AtDTX1 was introduced. AtDTX1 was selected due to its suitable expression in E. coli and its reticuline-transport activity. Expression of AtDTX1 enhanced reticuline production by 11-fold, and the produced reticuline was secreted into the medium. AtDTX1 expression also conferred high plasmid stability and resulted in upregulation or downregulation of several genes associated with biological processes, including metabolic pathways for reticuline biosynthesis, leading to the production and secretion of high levels of reticuline. The successful employment of a transporter for alkaloid production suggests that the proposed transport engineering approach may improve the biosynthesis of specialized metabolites via metabolic engineering.http://www.sciencedirect.com/science/article/pii/S2214030121000249AlkaloidsMetabolic engineeringTransport engineeringE. coliReticulineAtDTX1
spellingShingle Yasuyuki Yamada
Miya Urui
Hidehiro Oki
Kai Inoue
Haruyuki Matsui
Yoshito Ikeda
Akira Nakagawa
Fumihiko Sato
Hiromichi Minami
Nobukazu Shitan
Transport engineering for improving the production and secretion of valuable alkaloids in Escherichia coli
Metabolic Engineering Communications
Alkaloids
Metabolic engineering
Transport engineering
E. coli
Reticuline
AtDTX1
title Transport engineering for improving the production and secretion of valuable alkaloids in Escherichia coli
title_full Transport engineering for improving the production and secretion of valuable alkaloids in Escherichia coli
title_fullStr Transport engineering for improving the production and secretion of valuable alkaloids in Escherichia coli
title_full_unstemmed Transport engineering for improving the production and secretion of valuable alkaloids in Escherichia coli
title_short Transport engineering for improving the production and secretion of valuable alkaloids in Escherichia coli
title_sort transport engineering for improving the production and secretion of valuable alkaloids in escherichia coli
topic Alkaloids
Metabolic engineering
Transport engineering
E. coli
Reticuline
AtDTX1
url http://www.sciencedirect.com/science/article/pii/S2214030121000249
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